Climate change made recent Scandinavian heatwaves 2°C hotter and 10 times more likely, causing multiple health and environmental issues.

Scientists found that climate change made the recent heatwave in Norway, Sweden, and Finland about 2°C hotter and at least 10 times more likely, leading to heat-related deaths, overcrowded hospitals, increased drownings, wildfires, and algal blooms. In a world without climate change, such extreme heat would be extremely rare, but with 1.3°C of warming caused by human activities, such heatwaves are now expected every 50 years. If warming reaches 2.6°C by 2100, these events will become five times more likely and even hotter.